Yes, it is. A Arctic Cooling Accelero Twin Turbo II. Had the watercooling enthusiasts fooled for a second.

However, with that cooler my GTX670 is now 3 slots tall and the Prodigy only has space for 2...

Like all modding problems, it was solved with a Dremel.
I cut a huge hole in the side panel, cut a piece of acrylic to cover it, cut fan holes and mounting holes in said acrylic, bolted fans and a shroud to the acrylic, and finally bolted the acrylic to the side panel.

Its an after market cooler with after after market cooling , or something...